/* 清除内外边距 */
*{
    margin: 0;
    padding: 0;
}
/* 清楚浮动 */
.clearfix:before,
.clearfix:after {
    display: table;
    content: "";
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zoom: 1;
}
body{
    background-color: #f3f5f7;
    
}
a{
    color: #050505;
    text-decoration: none;
} 
input{
    border: 0;
    box-sizing: border-box; /*border padding都包含到width中*/
}
.container{
    width: 1200px;
    margin: 0 auto;
}
/* 头部 */
.header{
    height: 100px;
    overflow: hidden;
}
.header .nav{
    width: 1366px;
    height: 42px;
    margin: 26px auto;
}
/* logo */
.logo img{
    height: 42px;
}
.logo{
    float: left;
}
/* 导航栏 */
.navbar{
    float: left;
    height: 42px;
    line-height: 42px;
    margin-left: 50px;
}
.navbar ul{
    list-style: none;
}
.navbar li{
    float: left;
}
.navbar li a{
    padding: 0 10px;
    display: block;
    height: 42px;
}
.navbar li a:hover{
    border-bottom: 2px solid #00a4ff;
}
/* 搜索框 */
.search{
    width: 410px;
    height: 38px;
    border: 1px solid #00a4ff;
    float:right;
    
}
.search .wenzi{
    width: 360px;
    height: 38px;
    padding-left: 20px;
    float: left;
}
.search .anniu{
    width: 50px;
    height: 38px;
    float:right;
    background: url(./images/search_06.png) center center no-repeat;
  
}
/* 个人中心 */
.personal{
    float: right;
    height: 42px;
    margin: 0  15px 0 30px;  /*上 右 下 左  */
}
.personal img{
    margin: 0 8px;
}

/* banner */
.banner{
    height: 420px;
    background-color:#1c036c;
}
.banner-in {
    width: 1200px;
    height: 420px;
    background: url(./images/banner2.png) center center no-repeat;
}
.banner .slidebar{
    float: left;
    width: 190px;
    height: 420px;
    background:rgba(0,0,0,0.3);
}
.banner .slidebar ul{
    list-style: none;
}
.banner .slidebar li a{
    color:#fff ;
    font-size: 14px;
    font-family: '微软雅黑';
    padding: 0 20px;
    display: block; /*a为行内元素需转换*/
    height: 45px;
    line-height: 45px;
}
.banner .slidebar li a span{
    float: right;
    font-family: arial;
}
.banner .slidebar li a:hover{
    color: #00a4ff;
}
/* 右侧课表 */
.timetable{
    float: right;
    width: 230px;
    height: 300px;
    margin-top: 50px;
    background-color: #fff;
}
.timetable dt{
    height: 50px;
    background-color: #9bceea;
    text-align: center;
    line-height: 50px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 3px;
    margin-bottom: 4px;
}
.timetable dd{
    width: 193px;
    height: 60px;
    margin: 0 auto;
    border-bottom: 1px solid #ccc;
    padding-top: 14px ;
    box-sizing: border-box;
}
.timetable dd h4{
    font-size: 16px;
    color: #4e4e4e;
}
.timetable dd p{
    color: #a5a5a5;
    font-size: 14px;
}
.timetable dd:last-child{
    border: none;    /*去掉最后一个dd的底边框*/
}
.timetable dd a{
    height: 38px;
    border: 1px solid #00a4ff;
    display: block;
    line-height: 38px;
    text-align: center;
    color: #00a4ff;
}

/* 精品推荐（6个）  */
.recommend{
    height: 60px;
    background-color: #fff;
    width: 1200px;
    margin: 0 auto;
    margin-top: 8px;
    box-shadow: 0 4px 2px rgba(0,0,0,0.2); /*水平阴影 垂直阴影 模糊 阴影颜色*/
}
.recommend ul{
    list-style: none;
}
.recommend li{
    float: left;
}
.recommend li a{
    display: block;
    line-height: 60px;
    padding: 0 30px;
    border-right: 1px solid #ccc;
}
.recommend ul li a:first-child{
    color: #00a4ff;
}
.recommend a:hover{
    color: #00a4ff;
}
.recommend a:last-child{
    color: #00a4ff;
    border: 0;
    float: right;
    font-size: 14px;
}

/* 精品推荐 */
.rec{
    width: 1200px;
    margin: 0  auto;
    margin-top: 35px;
}
.rec-hd{
    height: 40px;
}
.rec-hd h4{
    float: left;
    color: #494949;
}
.rec-hd p a{
    float: right;
    color: #a5a5a5;
    font-size:14px ;
    margin-top: 10px;
    margin-right:30xp ;
}
.rec-hd a:hover{
    color: #00a4ff;
}
/* 精品推荐主体 */
.rec ul{
    list-style: none;
}
.rec-bd ul li{
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    box-shadow: 0 2px 2px rgba(0,0,0,0.3);
    overflow: hidden; /*溢出部分隐藏*/
    margin-right: 15px;
    margin-top: 15px;
}
/* 清除第5，10的外边距 */
.rec-bd ul li:nth-child(5){
    margin-right: 0;
}
.rec-bd ul li:nth-child(10){
    margin-right: 0;
}

.rec-bd li h5,.rec-bd li p{
    padding: 0 20px 0 24px;
    margin-top: 12px;
}
.rec-bd li h5{
    line-height: 22px;
    font-weight: normal;
    font-size: 14px;
}
.rec-bd li p{
    font-size:12px ;
    color: #999;
}
.rec-bd li p span{
    color: #ff7c2d;
}

/* 编程入门 */
.programming{
    width: 1200px;
    height: 392px;
    margin: 0  auto;
    margin-top: 35px;
}
.programming-hd{
    height: 40px;
}
.programming-hd h4{
    float: left;
    color: #494949;
    margin-right: 340px;
}

.programming-hd ul{
    float: left;
    list-style: none;
}
.programming-hd li{
  
    float: left;
    font-size: 15px;
    font-weight: normal;
    padding: 0 36px;
}
.programming-hd li a{
    color: #999;
}
.programming-hd p a{
    float: right;
    color: #a5a5a5;
    font-size:14px ;
    margin-top: 10px;
    margin-right:30px ;
}
.programming-hd a:hover{
    color: #00a4ff;
}
/* 编程入门主体 */
.programming-bd-le{
    width: 228px;
    height: 392px;
    float: left;
    /* margin-right: 15px; */
    margin-top: 25px;
   
}
.programming-bd-ri{
    float: right;
    width: 957px;
    height: 392px;
    margin-top: 25PX;
}
.programming-bd-ri .programming-top{
    width: 957px;
    height: 100px;
    margin-bottom: 22px;
}
.programming-bd-ri li:last-child{
    margin-right: 0;
}
.programming-bd-ri ul{
    width: 957px;
    height: 270px;
}
.programming-bd-ri ul li{
    float: left;
    background-color: #fff;
    box-shadow: 0 2px 2px rgba(0,0,0,0.3);
    overflow: hidden; /*溢出部分隐藏*/
    margin-right: 15px;
   /*  margin-top: 15px;  */
}
.programming .programming-ri  ul li img{
    width: 227px;
    height: 154px;   
}
.programming-bd-ri .inner .text{
    height: 112px;
}
.programming-bd-ri ul li .inner{
    width: 228px;
    height: 270px;
}
.programming-bd-ri li h5,.programming-bd-ri li p{
    padding: 0 20px 0 24px;
    margin-top: 12px;
}
.programming-bd-ri li h5{
    line-height: 22px;
    font-weight: normal;
    font-size: 14px;
}
.programming-bd-ri li p{
    font-size:12px ;
    color: #999;
}
.programming-bd-ri li p span{
    color: #ff7c2d;
}

/* 数据分析 */
.data{
    width: 1200px;
    margin: 0  auto;    
    margin-top: 110px;  
}
.data-hd{
    height: 40px;
}
.data-hd h4{
    float: left;
    color: #494949;
    margin-right: 340px;
}
.data-hd ul{
    float: left;
    list-style: none;
}
.data-hd ul li{
    float: left;
    font-size: 15px;
    font-weight: normal;
    padding: 0 36px;
}
.data-hd  li a{
    color: #999;
}
.data-hd  p a{
    float: right;
    color: #a5a5a5;
    font-size:14px ;
    margin-top: 10px;
    margin-right:30px ;
}
.data-hd  a:hover{
    color: #00a4ff;
}
/* 数据分析主体 */
.data-bd{
    margin-top: 25px;
}
.data-bd-l{
    float:left;
    width: 228px;
    height: 392px;
}
.data-bd-r{
    float: right;
    width: 957px;
    height: 392px;
}
.data-bd-r .top{
  margin-bottom: 22px;
  width: 957px;
  height: 100px; 
}

.data-bd-r ul{
    width: 957px;
    height: 270px;
}
.data-bd-r li:last-child{
    margin-right: 0;
}
.data-bd-r ul li{
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    box-shadow: 0 2px 2px rgba(0,0,0,0.3);
    overflow: hidden; /*溢出部分隐藏*/
    margin-right: 15px;
}
.data-bd-r li h5,.data-bd-r li p{
    padding: 0 20px 0 24px;
    margin-top: 12px;
}
.data-bd-r li h5{
    line-height: 22px;
    font-weight: normal;
    font-size: 14px;
}
.data-bd-r li p{
    font-size:12px ;
    color: #999;
}
.data-bd-r li p span{
    color: #ff7c2d;
}
/* 机器学习工程师 */
.dataeng{
    width: 1200px;
    height: 258px;
    margin: 0  auto;    
    margin-top: 35px;  
}
.dataeng-hd{
    height: 40px;
    margin-top: 35px;
}
.dataeng-hd h4{
    float: left;
    color: #494949;
    margin-right: 340px;
}
.dataeng-hd ul{
    float: left;
    list-style: none;
}
.dataeng-hd li{
    float: left;
    font-size: 15px;
    font-weight: normal;
    padding: 4px 46px;
}
.dataeng-hd li a{
    color: #999;
}
.dataeng-hd p a{
    float: right;
    color: #a5a5a5;
    font-size:14px ;
    margin-top: 10px;
    margin-right:30px ;
}
.dataeng-hd a:hover{
    color: #00a4ff;
}
.dataeng ul{
    list-style: none;
}
 .dataeng{
    clear: both;
}
.dataeng-bd ul li{
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    box-shadow: 0 2px 2px rgba(0,0,0,0.3);
    overflow: hidden; /*溢出部分隐藏*/
    margin-right: 15px;
    margin-top: 15px;
}
/* 清除第5，10的外边距 */
.dataeng-bd ul li:nth-child(5){
    margin-right: 0;
}

.dataeng-bd li h5,.dataeng-bd li p{
    padding: 0 20px 0 24px;
    margin-top: 12px;
}
.dataeng-bd li h5{
    line-height: 22px;
    font-weight: normal;
    font-size: 14px;
}
.dataeng-bd li p{
    font-size:12px ;
    color: #999;
}
.dataeng-bd li p span{
    color: #ff7c2d;
}

/* 前端学习工程师 */
.eng{
    width: 1200px;
    margin: 0  auto;    
    margin-top: 35px;  
}
.eng-hd{
    height: 40px;
}
.eng-hd h4{
    float: left;
    color: #494949;
    margin-right: 340px;
}
.eng-hd ul{
    float: left;
    list-style: none;
}
.eng-hd li{
    float: left;
    font-size: 15px;
    font-weight: normal;
    padding: 4px 46px;
}
.eng-hd li a{
    color: #999;
}
.eng-hd p a{
    float: right;
    color: #a5a5a5;
    font-size:14px ;
    margin-top: 10px;
    margin-right:30px ;
}
.eng-hd a:hover{
    color: #00a4ff;
}
.eng ul{
    list-style: none;
}
.eng-bd ul li{
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    box-shadow: 0 2px 2px rgba(0,0,0,0.3);
    overflow: hidden;; /*溢出部分隐藏*/
    margin-right: 15px;
    margin-top: 15px;
}
/* 清除第5，10的外边距 */
.eng-bd ul li:nth-child(5){
    margin-right: 0;
}

.eng-bd li h5,.eng-bd li p{
    padding: 0 20px 0 24px;
    margin-top: 12px;
}
.eng-bd li h5{
    line-height: 22px;
    font-weight: normal;
    font-size: 14px;
}
.eng-bd li p{
    font-size:12px ;
    color: #999;
}
.eng-bd li p span{
    color: #ff7c2d;
}

/* 牛人推荐 */
.person{
    width: 1200px;
    margin: 0 auto;
    margin-top: 35px;
    background-color: pink;
}
.person-hd{
    height: 40px;
}
.person-hd h4{
    float: left;
    color: #494949;
}
.person-bd li.one{
    background: url(./images/cui.png);

}


/* 页面底部分 */
.footer{
    height: 270px;
    background-color: #fff;
}
.footer-in{
    padding-top: 30px;
}
.footer-l {
    float: left;
}

.footer-l p {
    font-size: 12px;
    line-height: 18px;
    color: #999;
    margin-top: 20px;
}

.footer-l a {
    display: block;
    width: 118px;
    height: 33px;
    border: 1px solid #00a4ff;
    text-align: center;
    font-size: 16px;
    line-height: 33px;
    margin-top: 15px;
    color: #00a4ff;
}

.footer-r {
    float: right;
    color: #333;
}
.footer-r dl {
    float: left;
    width: 225px;
}

.footer-r dt {
    font-size: 16px;
    height: 30px;
   
}
.footer-r dd {
    font-size: 12px;
    height: 20px;
}

.footer-r dd a:hover {
    color: #00a4ff;
    text-decoration: underline;
    /*  添加下划线 */
}